Frequencies for first 10,000 rows of rx7v2c3 variable in namcs2011 dataset :

   For RX7, |
 level 2 of |
MULTUM drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,980       99.80       99.80
        064 |         11        0.11       99.91
        065 |          1        0.01       99.92
        270 |          2        0.02       99.94
        433 |          6        0.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016